City of Chicago v. Environmental Defense Fund
Headline: Court affirms that ash from municipal waste-to-energy incinerators is not exempt and can be regulated as hazardous waste, making it harder for cities to dispose ash in ordinary landfills.
Holding: The Court held that ash from a municipal waste-to-energy incinerator is not exempt under §3001(i) and may be regulated as hazardous waste under federal hazardous-waste rules.
- Cities may need to treat incinerator ash as hazardous waste, increasing disposal costs.
- Waste-to-energy plants face stricter federal permitting and cleanup responsibilities.
- More ash will be barred from ordinary landfills and require specialized hazardous disposal.
Summary
Background
The dispute was between the city of Chicago, which runs a large waste-to-energy incinerator, and the Environmental Defense Fund, which sued after the city disposed of the facility’s ash in ordinary landfills. The incinerator burns about 350,000 tons of solid waste a year and produces roughly 110,000–140,000 tons of ash. Lower courts split: a district court sided with the city, the Seventh Circuit held the ash could be regulated as hazardous, the EPA issued a memorandum favoring an exemption, and the Supreme Court granted review.
Reasoning
The central question was whether the 1984 statutory clarification that exempts certain resource recovery facilities also exempts the ash those facilities produce. The majority read the statute literally: it exempts certain facility management activities but does not mention the act of “generating” waste or the ash itself. The Court contrasted a different statutory exemption that expressly used the word “generating,” declined to rely on a committee report, and refused to defer to the EPA memorandum to create a broader ash exemption. The Court therefore agreed that the ash can be regulated as hazardous waste under the federal hazardous-waste scheme.
Real world impact
Because the decision leaves ash subject to Subtitle C hazardous-waste regulation, cities and private waste-to-energy operators may face stricter handling, permitting, disposal, and cleanup obligations. More ash may need specialized hazardous-waste disposal rather than ordinary landfills, raising costs and changing operational practices. The ruling resolves the statutory question on the merits rather than leaving it to the agency.
Dissents or concurrances
Justice Stevens (joined by Justice O'Connor) dissented, arguing the 1984 amendment and earlier EPA practice intended to exclude the entire waste stream, including ash, and that municipalities reasonably relied on that understanding.
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